If Tony Parker keeps scoring like he has to begin the season, the San Antonio Spurs should be fine offensively until Manu Ginobili returns.

The Spurs suddenly have a bigger, more unfamiliar problem to address.

San Antonio usually wins championships because of the way it plays on the other end of the floor, but the Spurs have been one of the NBA's worst defensive teams early in the season.

The Spurs followed their 0-3 start Wednesday night with a 129-125, double-overtime victory in Minnesota, as Parker had 55 points, 10 assists and seven rebounds. That allowed San Antonio to overcome another uncharacteristically poor defensive performance.

San Antonio was surrendering 106.5 points per game after that victory, third-worst in the league. The Spurs were allowing teams to shoot 48 percent from the floor, sixth from the bottom in a category in which they are usually among the league leaders.

"I think defensively we haven't been playing very solid. On top of that, it seems like people are shooting really well against us," Tim Duncan said. "Any kind of open crack that anybody's getting, they're knocking those shots down. Whatever it may be, bad defense or people just feeling comfortable against us, whatever it may be, we've got to turn that a little bit."